Improvement in machines for cutting stone



anat smc 3mi-wt mitica HUGH YOUNG,- on AM,IDDLmowN CONNECTICUT, ANDJAnns L. YOUNG, or NEW YORK, VN.Y. l

A:MPRovl-:Meur IN MAcHINEs FoR cuT-rlne s'ronE.

The Schedule referred to in these IIZIetreIB Patent andx makinglpart' ofthe same.

We, HUGH YoUNG,.of Middletewn, in the county of Middlesex and State ofConnecticut, and J AMES L. YOUNG, of New York, in the cdunty andI Stateof New York, have invented certain Improvements in Tools for CuttingStone,of which the following i's a specification.

` Nature and Objectsrof the Invention; In other applications for LettersPatent, which we have before the United States Patent Ofiice, we havedescribed `a new mode of cuttinglston'e by means and with the use of at`ool, consisting of or protectedl by .a diamond or cluster of diamonds,or other hard lOur invention consists in the combinationof two' cutterswith one blade, andA of two debris-plows so arranged, each to theothers, that onecutter will pass out at one end ofthe cut, followed byone debris? plow, with o ne stroke of the machine, and the other cutterwill pass out at the. other -end of the cut, followed by the otherdebris-plow, with the opposite stroke of the machine, the action of theone cutter with its plow'overlapping the action of-the oth'ercutterwit-h its plow within the cnt at some'p'int between the two endsthereof. I

` Ilescript'ion'of Drawing.

Figures 1 and 2 are front -views of our improved tool for cutting stone,which we call a twin cuttertool, shown in two different positions in astone seen in sectional elevation through the ont therein;

Figui-e3 is a view on a larger scale of the debris-- -plow of ourimproved twin cutter-tool, 'having one of its sides or cheeks removed,so as to show the shape of the bottom part of th cleft, and of part ofthe blade upon which the said debris-plow is mounted; and

Figure 4 is a transversal sectional view of tllef same through the lineX X. i

. GeneralDescription.. A isa blade -or guiding-sheet, having a movementor stroke in theline of the cut to be made, as indicated by the arrowsin om` drawing, said movement having alength of stroke, as from M to l.This blade A is mounted in any suitable machine,

for working the same in proper relation to the stone to be cut. y

of -the tool.

B and B' are our twin cutters, which are each to consist'of a diamond,or cluster of diamonds, or other hard stones, or of a tool protected bya diamond, or cluster of diamonds, or other hard stonesorof a toolprotected bytwo distinct diamonds, or cluster of diamonds, or other hardstones, one of such distinct diamonds or clusters being arranged so asto out in one direction, and the other of such distinct diamonds orclusters so as to cut in the other` direction.

Thetwin cutters B andB are' fastened or hung to the blade A at asomewhat less distance from each other than the length of the stroke ofthe machine, and Vthe stone is fed to the twin cutter-tool vby anyproper mode; but as the cutters plow or cut in both directions, and aseach cutter only passes out at one end of' the stone, and the debrisformed by the inward transit ofboth cutters is pushed from either end tothe center of' said cut, it would soon choke the action 'TO obviat-ethis ditiiculty, we employ, in combination with .our twin cutters B B',the two debris-plows Cl and C2, which may be made of any constructionanswering the purpose, but whose characteristic is that in entering thecut they will ride over the debris or other impediment, whilev in theother direction, or passing outward, they will push the-debris beforethem and clear the cnt.

Y 'We illustrate the simple mode of construction we now employ for thedebris-plows of our twin .cuttertool, but many modifications may belnade, and yet retain' the characteristic above referred to. A

G is the debris-plow, cleft so as to present two cheeks,g0" G, and asolid part, .0', at bottom.

The part O ,is fitted into a notch, T O U S, in the blade A'. The cheeksare made'to'straddle the saidf blade A, and the plow is hung or pivotedby a loose rivet or bolt, l), in au eccentric manner, as shown in ourdrawing, so that when the butt L ot' the piece O' will touch the part US of the notch in the blade A the lower part of the plow, at Z, willproject below the lower edge Q Q of the blade A sufficiently to allow itto'act on the bottom of the cut and push before it the debris left inthe cnt by the action of the cutters.

There is left between thetop part of the piece C"` and the edge OU ofthe notch enough play to allow the said part C to rise and' enter intothe notch T O U S; and when the plow is moving in the directiom' ol' thearrow, iig.'3, if any impediment or debris strikethe part I, the plowcan rise to the extent indicated by the dotted lines, and the edge I Zwill ride over such impediment.

The two debris-plows O and'C2 are. located between the twincutters B andB', and are turned away vone frm the other, as seen in our illustration,leaving suicient distance between the end Z of theplow and the cutter Bfor Vthe debris of one transit of the cutter to lodge witliout chokingthe tool.

In iig. 1 the plow G llas cleaned the' cut of the debris made by thecutter B from Gr to F, and of the debris it may lmvc left behind it inits passa e from F to G; and the cutter B', in cutting from l to F, llasmede en accumulation of debris at 1*,the plow G2 having ridden over thestone nt bottom oi' the cut from E to F.

In fig. 2 tbe movement is reversed; the cutterB llas reached the point Hin its transit from G to F, and the plow G1 is (passing inward) ridingover the uncut stone; the cutter B has reached the point J in itstransit from F to E, und the plow C12, being on its passage outward, ispushing tbe debris before it.

The feed of the stone is indicated by the lines at the bottom of tbecut, tbe inclination being exaggerated to illustrate the notion of thecutters and plows more strikingly.

1m, en'

C laims.

1. The improved tool for cutting stones, consisting of the combinationof the twin cutters B B', the debris-pleurs C and 0*, and the blade A,arranged so as to operate substantially iu the nimmer and. for tbepurpose set fort-l1.

2. The debris-plow C, constructed so as to straddle und be hung to theblade Ain such a. manner esto plow through the ent and push before it mydebris left in the said cnt when moving outward, while in moving in theopposite direction it will ride over :my such debris, or otherimpediment, substantially in the manner herein specified.

' HUGH YOUNG.

JAMES L. YOUNG.

Witnesses:

Moens E. Gimeno, FRANK 1?. CnAsTo..

I I un uw I

